Carbid-feed valve.



J. s. BALLARD.

Patented Jan. 14,1913.

GARBID FEED VALVE.

APPLICATION rum) JUNE 1, 1912.

. rag. 5' wr.

[NVBNTOR @allarci WITNESSES I E 17051 ks OORAPH CCL, WASHINGTCIIN. D. C.

A PLAN JOHN s. BALLARD, 0E GAINESVILLE, TEXAS.

CARBID-FEED VALVE.

Specification of Letters Patent.

Application filed June 1, 1912.

Patented Jan. 14, 1913.

Serial No. 701,057.

To all whom it may concern Be it known that I, JOHN S. BALLARD, acitizen of the United States, residing at Gainesville, in the county ofCooke and State of Texas, have invented certain new and usefulImprovements in carbid-Feed Valves, of which the following is aspecification, reference being had therein to the accompanying drawing.

This invention relates to acetylene generators and has special referenceto a novel form of valve used in connection with such generators.

The principal object of the invention is to provide an improved form offeeding valve, the valve being of the balanced type, thus rendering thesame easily opened or closed.

Another object of the invention is to provide a form of rotary alve ofthe butterfly type wherein the valve will be provided with a rodarranged to open the same, Said rod acting as a weight to close thevalve under certain conditions.

WVith the above and other objects in view, the invention consists ingeneral of certain novel constructions, combinations and arrangements ofparts as will be hereinafter fully described, illustrated in theaccompanying drawings, and specifically claimed.

In the accompanying drawings, like characters of reference indicate likeparts in the Several views, and Figure 1 is a diagrammatic view of anacetylene generator showing the position of the valve. Fig. 2 is avertical median section taken through the valve. Fig. 3 is a similarview to Fig. 2 but taken at right angles thereto. Fig. 4 is a bottomplan View of the valve.

The acetylene generator adapted for use with this valve comprises theinner tank 10 and outer tank 11 adapted to receive the sealing water andbetween these tanks is received the lower end of the bell 12 which isseparated from the carbid holder 13 by a constricted neck 14. The valveindicated in general at 15 is shown in position in this neck. This valveconsists of a cylindrical lower portion 16 having an openingtherethrough as shown at 17, the opening being concentric with theperiphery of the cylinder. Above this cylindrical portion extends ahollow inverted frusto conical portion 18 the walls whereof graduallybecome thinner toward the upper edge and terminate in what issubstantially a knife edge 19.

Extending through the threaded apertures 20 arranged at diametricallyopposite points in the walls of the cylindrical portion are screws 21whereon are secured lock nuts 22.

larried on these pivot screws 21 is a disk 23 having rounded edges sothat the same may be turned freely on the pivot pins. This disk hasdiametrically opposed recesses 24 formed therein for the purpose ofreceiving the pointed ends of the screws 21.

Formed on the disk 23 is a pair of spaced ears 25. Between these ears isreceived the reduced end of a'rod 26, the lower end whereof. is threadedas at 27. On this threaded lower end there may be provided a suitablepiece of gaspipe, the same being connected by a union 28 so that thelower end of the pipe will extend downward adj acent to the bot-tom ofthe inner tank.

In order to form a stop to limit the movement of the valve 23 in onedirection there is provided a pair of spaced screws 29 which lie one oneither side of the rod 26 when the valve is closed as can clearly beseen by reference to Fig. 4.

In use this device is simply dropped into the constricted neck 14 withthe rod and gas pipe hanging down. Now as the gas is used out of thebell the latter descends and when the lower end of the pipe strikes thebottom of the bell the downward movement of the bell causes the pipe torotate the valve 23 to the position shown in dotted lines in Fig. 3.

This permits carbid to flow into the water in the inner tank and as thegas is generated the bell rises and the weight of the rod 26 andattached pipe causes the valve to close.

It will be obvious that any wear on the bearings can be taken up bytightening the screws 21 and that owing to the sharpened edge 19 carbidwill flow freely down through the valve.

There has thus been provided a simple and eflicient device of the kinddescribed and for the purpose specified.

It is obvious that many minor changes may be made in the form andconstruction of this invention Without departing from the materialprinciples thereof and it is therefore not wished to confine theinvention to the exact form herein shown and described, but it is wishedto include all such as properly come within the scope claimed.

Having thus described the invention, what is claimed as new, is

A valve for acetylene generators comprising a cylindrical tubularportion forming the lower part of the valve casing and an invertedfrusto conical portion forming the upper part of said casing, the wallsof the lower portion being of uniform thickness throughout, and thewalls of the upper portion decreasing in thickness upwardly andterminating substantially in a knife edge, a pair of pointed screwsoppositely disposed through the walls of the lower portion and eachprovided with a lock nut, a circular disk having oppositely disposedrecesses, said disk being held in the lower port-ion of the casing withthe points of the screws entering the recesses, a stop pin to limit themotion of said disk in one direction, and a rod pivotally connected tothe underside of said disk and provided with an end adapted forattachment to a pipe or the like.

In testimony whereof I hereunto aflix my signature in presence of twowitnesses.

JOHN S. BALLARD. Witnesses Lee. R. BELL, WM. H. AINSWORTH.

flopies of this patent may be obtained for five cents each, byaddressing the Commissioner of Yatents, Washington, D. C."

